as in red light
something that tells of approaching danger or risk
the résumé she accidentally left on the office printer was a red flag that she was planning to quit
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Recent Examples of red flag
Unlike New Mexico and Texas, Colorado's most severe conditions are expected Monday rather than today, with red flag warnings issued for Monday from noon to 9 p.m. MDT in Pueblo, Huerfano, Las Animas, Otero, and other counties.
—
Ron Estes, MSNBC Newsweek, 30 Mar. 2025
Understanding the gravity of a red flag warning and adhering to these precautions is paramount in averting wildfires during these perilous conditions.
—Nc Weather Bot, Charlotte Observer, 28 Mar. 2025
Regardless of intent, though, moving too fast is still a red flag to be wary of.
—Jenna Ryu, SELF, 28 Mar. 2025
Perhaps that more than anything was a red flag for Briere, considering some of the coach’s missteps a year ago.
—Kevin Kurz, New York Times, 27 Mar. 2025
See All Example Sentences for red flag
Ron Estes, MSNBC Newsweek, 30 Mar. 2025
Understanding the gravity of a red flag warning and adhering to these precautions is paramount in averting wildfires during these perilous conditions.
—Nc Weather Bot, Charlotte Observer, 28 Mar. 2025
Regardless of intent, though, moving too fast is still a red flag to be wary of.
—Jenna Ryu, SELF, 28 Mar. 2025
Perhaps that more than anything was a red flag for Briere, considering some of the coach’s missteps a year ago.
—Kevin Kurz, New York Times, 27 Mar. 2025
See All Example Sentences for red flag
Recent Examples of Synonyms for red flag
Noun
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State police said the driver later allegedly blew through a red light at the intersection of Kelly Road and Route 83 before continuing north on Route 83, the warrant affidavits said.—
Justin Muszynski,
Hartford Courant,
27 Mar. 2025
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Bosworth reveals that she's been obsessed with red light therapy and has gotten her husband into the trend.—
Michelle Lee,
People.com,
24 Mar. 2025
Noun
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Strong winds are occurring but are not so strong as to warrant a High wind warning.—
NC Weather Bot,
Charlotte Observer,
15 Apr. 2025
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Mysterious folders have appeared on PCs along with dire warnings.—
Zak Doffman,
Forbes.com,
15 Apr. 2025
Noun
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In 2023 researchers led by Nikku Madhusudhan, an astrophysicist at the University of Cambridge, announced the first signs of dimethyl sulfide in K2-18 b’s atmosphere.—
Meghan Bartels,
Scientific American,
17 Apr. 2025
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And by monitoring her behavior for any signs of complications.—
Thomas G. Moukawsher,
MSNBC Newsweek,
17 Apr. 2025
Cite this Entry
“Red flag.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20flag. Accessed 22 Apr. 2025.
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